Window sash



Jan. 2, 1940. El E. DoNAHoE `WINDOW SASH Filed March 28, 19:59

nii

A TTORNEY.

Patented' Jas.- z, 1940v UNITED s'rrxrl-:s

PATENT oFFlcE WINDOW sash Ellis E. Donahoe, Dormonala., assignor. to TheDon-Economy Window Company, Ilittslznurgh,Y Pa., a partnership composedof Ellis E. Donahoe, Benjamin M. Classy,- Thomas H. McGregor, andCharles A. Roland L Application March 28,

s claims.

improved sealing arrangement for bridging the spaces between the edgesof a rotatable window and the frame in which the same is mounted.

Another object of my invention is to provide a structure of thecharacter referred to wherein the strips which make the seal, serve alsoas locking strips to normally prevent tiltingv of the window sash, andwill be automatically shifted between their operative and inoperativepositions simply through raising and lowering of the window sash.

Still another object of my invention is to provide an improved form ofpivotal connection between the swinging sash and stationary parts of.the structure, whereby the sash can be yieldably held at desired tiltedpositions, and wherein the parts of the pivotal connection are snuglyheld `to avoid looseness and play, such parts being nevertheless readilydisconnectible in order `to permit complete removal of the window sashfrom itsframe.

One form which my invention make take is shown in the accompanyingdrawing, whereinv Figure 1 is a face view partially elevational andpartially in section, of a window structure embodying my invention; Fig.2 is a vertical sectional view through the same; Fig. 3 is an enlargedview taken on the line III-III of Fig. l; Fig. 4 is a. sectional view onan enlarged scale, showing the members whereby a detachable pivotedconnection is provided between the window sash and the stationarymembers of the structure; Fig. 5 is a view taken on the line V-V 4oilFig. 4; and Fig. 6` is an end view of the structure of Fig. 4.

For convenience of illustration, I have shown a window sash mounted inframes of somewhat the usual form and having rotativemovement about ahorizontal axis, but it will be understood that the invention isapplicable alsoto awindow sash which is mounted for movement about avertical axis.. y

The window frame is composed'of side-frame `-members 5 and 6 andk a sillmember 1. The numeral 8 represents. the lower sash, and the numeral 9 aportion ofthe upper sash which may .be constructed and mounted insubstantially the same 'manner as the sash 8, to be hereinafterdescribed. A pane of. glass A is secured in the i939, serial No. 264,539

sash in the usual manner, and guide strips I and H are secured to theside frame members :and 5. Between each pair of'guide strips I0 and II asash strip .I2 is slidably mounted, as shown more clearly in Fig. 3.lThesestrips I2 may be formed separately from the vertical bars 8a ofthe sash 8, or willbe cut thereiromin case it is desired to apply myinvention to la window sash .of a standard form.'` The adjacent portionsof the members 8a and lI2 `are provided with vertical grooves for thereception of a locking and sea-ling bar i3, thedepth of the groove ineach of the sash members 8a being substantially equal to the widthcfits'contained bar I3. Each bar I3 is.

strips I2 by means to be hereinafter described, soI

that lwhen the locking and `sealing bars I3 are pushed entirely clear ofthe slots in the members I2 4and into the sash members 8a, the sash 8can readily be tilted, somewhat as shown in Fig.

2, or kcan .be entirely reversed to permit cleaning both sides of theglass, Awithout draft through the When the sash 8 is-lowered against thesill 1,

y as shown ,in Fig. 1, the locking bars I3, which are somewhat longerthan the sash, are projected upwardly and outwardly into the verticalslots inthe sash strips I2., as shown more. clearlyl in Fig.. 3,. and atthe left-hand sidev of Fig. 1. sash Ii` istherefore rigidly lockedagainst tilting movement, and the space between the sash kmembers 8aandlZ is sealed to keep out cold air and moisture. The usual ropes and.pulleys V(not shown) may be attached to the sash strips I2', and thesash member 8 and the strips raised and lowered as a unit.

Since the locking strips I3 can be moved inwardly `to their retractedpositions within the sash 8 by simply raising the lsash 8 until theupper ends of.` 'such strips strike the top of the window frame, as thelower endseof the strips I3 will then project below the Window so as tobe TheI moved again into locking position when vthe sash y ends of thesealing strips for shifting them longitudinally, in many cases thiswould be a difficult operation, because they often become rusted, boundby grit or warped, whereas the momentum of the window in raising andlowering it will impart sufficiently sharp blows to the `ends of thesealing strips to effect shifting movements thereof.

The upper sash 9 may be mounted in substantially the same manner as thesash 8, but theA locking strips I6 of such upper sash will preferablyhave their slots I1 of reversed angularity with respect to the angle',of the slots I4 in the strips it, so that when the upper sash is raisedand the locking strips are consequently in their lowermost position,they will be' projected into locking position within grooves in sashstrips corresponding to the strips l2@ The pivotal connections betweenthe swinging sash and the stationary members comprise a plate 29, setinto each of the sash strips I2 and suitably secured thereto by screws;a second plate 2l set into and secured to the sash member 8a, and ashaft 22 that serves as a pivot pin, the shaft having suitable bearingsupport in the plates 20 and 2 l. A bushing 23 loosely surrounds theshaft 22 and is providedv with a pair of arms 24. A spring 25 isinterposed between the bushing 23 and a fixed collar 26 on the shaft 22,so that the bushing 23 is yieldably projected toward the plate 2li andthe arms 24 will be yieldably held in radiating grooves 21 on the innerface of the plate 20. The arms 24 lie partially within long slots formedin the plate 2l so that they in effect bridge the plane between themeeting faces of the plates 2B and 2|. With the locking strips fullywithdrawn into the slots in the sash members 8a, the sash 8 can betilted on its pivotal supports and will be yieldably held at variouspositions by reason of the arms 24 extending into the radial slots 27 ofthe plate 20, the outer faces of the arms 24 being rounded so that theywill readily slide out of the grooves 21 when tilting the window sash. l

During swinging of the sash and movement of the spring-pressed retainingarms 24 from one slot 2 to another, the plates 2| and 20 and the sashmembers to whichthey are connected will not be spread apart, becausethecamming move- 'ments imparted to the arms 24 when passing from oneslot 2l to another slot 27 will simply result in the arms being pushedslightly outwardly within their plate 2l, against the spring 25. It willbe seen that the bushing 23 and the arms 24 can readily be replaced whenthey become worn.

At its inner end the shaft carries a pin 28 which, when in a verticalposition, can pass through a vertical slot 29 in the plate 20, to therear side of such plate, whereupon turning of the shaft through 90 willmove the pin 28 to the position shown in Figs. 4 and 6, vat which itwill engage notches in a boss on the rear side of the plate 2U and thewindow sash 8 thereby snugly held in position, byreason of the expansiveforce of the spring 25. This locking together of the parts willnotinterfere with the swinging of the sash and its plate 2l relative to theplate 20 and the 'stationary sash member l2.

with a knurled head3l which is tapped to receive the threaded end of ahandle 32, whereby the shaft 22 can be operated in opposition to thespring tension, to connect and disconnect the window more readily thanit could be done simply by turning the knurled head 3l. It will be seenthat when the sash bar has been placed in position and the member 30removed, there are no projecting parts that invite tampering,` or whichk interfere with operating or cleaning the window.

Froml the foregoing it will be seen that my invention has a furtheradvantage in that the sash can be detached from the frame without theneed of` removing'stop beads and parting beads, for the purpose ofrenewing sash cord or chains, reglazing, applying weather stripping,etc. Also it can be employed with various types of metal sash structuresas well as to wood sash.

I claim as my invention:

. 1. The combination with a window frame, of a sash structure comprisingsash strips slidably supported on the frame and each having alongitudinally-extending groove in its inner surface, a sash memberdisposed between said strips and having grooves that are normallyopposite to the grooves in said strips, means for movably supporting thesash member onsaid strips, a locking strip supported in each groove ofsaid sash member and movable laterally so that its inner edge willextend into the groove of the adjacent sash strip, the locking stripsbeing of greater length than the sash member, and guide means foreffecting movement of thelocking strips laterally into the grooves inthe sash strips when the sash member is moved into engagement withone-end of the said frame and for effecting lateral movement thereof outof the last-named grooves when the sash member is moved intoengagementfwlth the other end of the said frame.- l

2. The combination with a window frame, of a sash structure comprisingsash strips slidably supported on the frame and each havingl alongitudinally-extending groove in its inner surface, a sash disposedbetween the sash strips and having grooves that are normally oppositethe firstnamed grooves, means for movably supporting the sash -member onsaid strips, a pin extending across each of the grooves in the sash, anda substantially straight locking -strip lying within each sash grooveand having angular slots whose walls are engaged by one `of the pins andso arranged that when the locking strip is moved upward relative to thesash, its outer edge will enter the groove in the adjacent sash strip,and when moved in the opposite direction it will bewithdrawn into itsgroove in the sash to permit movement of the sash independently of thesash strip, the locking strips being of greater length than the lengthof the sash so that when the sash is lowered against the lower vend ofthe window frame, the outer edges of the locking strips will beprojected into the grooves of the vsash strips, and when the sashstructure is elevated into contact with the upper end of the windowframe, the locking strips will" be forced into retracted position withinthe grooves in the sash.

3. The combination with a window frame of upper and lower sashstructures each comprising sash strips slidably supported on the frameand each having a longitudinally-extending groove in its inner surface,a sash member disposed bethat are normally opposite the grooves in thestrips, a p in extending across each ofthe grooves in the edges of thetwo sash members, and a locking strip lying within each of the vsashgrooves 7o tween each of the sash strips and having grooves is loweredagainst the lower end of the Window frame, the outer edges of itslocking strips will and having an angular slot Whose Walls are engagedby one of said pins, the slots in the locking i strips of the lower sashmember being so arranged that when the strips are moved relative to thesash, their outer edges will enter the grooves' in the adjacent sashstripsand when moved in the opposite directions they will be Withdrawninto the grooves in the sashto permit movement of the sash independentlyof the sashstrips, the

locking strips being of greater length than the length of the sash sothat when the bottom sash be projected into the grooves of the adjacentsash strips, and when the sash structure is elevated into contact withthe upper end of the window frame,v the locking strips will be forcedinto re tractedposition Within the grooves in the sash,

upper end of the Window frame, such strips will such upper sash islowered into` engagement with the lower endof the frame, its lockingstrips `will be forced `out of the grooves in the adjacent sash strips.

C ELLIS E. DONAI-IOE.`

be forced into locking engagement with the.v t

. grooves in the adjacent sash strips, and when -10

